While vacationing on Cape Cod with her married children, their families, and her dearest friend Sadd, widow Clara Gamadge (Murder Observed, Working Murder) is alarmed by the sudden reappearance of Armand Evers, a chum she hasn't seen in 40 years, and nonplussed by his tale of a possible murder--his own!--and his insistence that she investigate whether his sister Rachel is, in fact, really his sister. A call to Rachel in Ireland is even more disturbing: She insists that Armand is at her side and that it's her crazy cousin Boyd at the Cape. But is it? Boyd/Armand is soon dispatched in a hotel pool; his granddaughter Vee suddenly pops up; and Clara and Sadd, with Vee in tow, head for Dublin, where the nearly blind Rachel's aide suffers a fatal mishap; her grandson (or is he?) is charming but full of blarney; and Boyd/Armand is poised to strike again. A few obvious deductions later, the fortune-hunting cad is finally identified, and Clara and Sadd return to the States, this time towing along not only Vee but a Dublin poet-husband. Very slight but, like its predecessors, rendered with much charm and lively interaction between the generations.